this post was submitted on 31 Jan 2024
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Today I Learned

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[–] Dirk@lemmy.ml 16 points 7 months ago (1 children)

11 lines of code shouldn't be a package.

[–] xor@infosec.pub 6 points 7 months ago (4 children)

you should see the "is_odd" package...

it's like, return (num%2)? true:false

[–] Dirk@lemmy.ml 8 points 7 months ago (2 children)

People using this deserve that their code breaks. Absolutely ridiculous.

Neither this, nor the leftpad thing, nor this is-even “package” are things I would even think about for a second before just writing it on my own. I wouldn’t even consider those features (let alone packages to depend my code on!) but basic programming.

[–] Ephera@lemmy.ml 6 points 7 months ago (1 children)

Problem is when you accidentally pull it in as a transitive dependency...

[–] Dirk@lemmy.ml 5 points 7 months ago

Yeah :( This also is why such nonsense “breaks the Internet” …

[–] xor@infosec.pub 4 points 7 months ago (1 children)

i just don't see how npm is letting this happen...
im going to write an npm module called "true" that just returns true...

[–] Dirk@lemmy.ml 4 points 7 months ago

… and that has 4 dependencies on it’s own!

[–] vrighter@discuss.tchncs.de 3 points 7 months ago (1 children)

and that's still too verbose. it should be (num % 2) != 0

[–] xor@infosec.pub 1 points 7 months ago (1 children)
[–] 2deck@lemmy.world 1 points 7 months ago

Name checks out

[–] person@lemm.ee 3 points 7 months ago

You didn't just use a ternary operator to then return true or false.

[–] 50gp@kbin.social -1 points 7 months ago (3 children)

at which point do you blame the language for not implementing it natively?

[–] rikudou@lemmings.world 6 points 7 months ago

I mean, does any language implement is_odd() natively? Doesn't everyone implement modulus and pretty much assumes that you remember modulus from elementary and can infer that even numbers are those where x % 2 == 0.

[–] Dirk@lemmy.ml 3 points 7 months ago (1 children)

at which point do you blame the language for not implementing it natively?

Erm … What more native than number % 2 do you want to have it?

[–] Ephera@lemmy.ml -3 points 7 months ago* (last edited 7 months ago) (1 children)

2.is_even()

(I don't know, if this is possible in JS.)

[–] Dirk@lemmy.ml 3 points 7 months ago (1 children)

Let’s call the number variable just x, you then have literal math (Euclidean division) if you ignore === instead of = for equals.

x % 2 === 0

This can’t get better or more native than “just math”. This is the whole code you need to detect if a number is even. I wouldn’t even call it “code”.

If you remove whitespaces and ignore the type you end up with x%2==0 which is 6 characters long and a fully valid if clause. No magic involved, no abstraction, no weird function calls on integers …

I see that in modern JS this type of coding is a trend, but you can’t tell me you want to replace 6 characters with an own module or a package. :)

[–] Ephera@lemmy.ml -1 points 7 months ago

No, I want that in the std lib. Yes, it would just call x % 2 == 0 underneath. But the advantage is readability. I'm in principle aware that x % 2 == 0 is true when the number is even, but I need it seldomly enough that I do still need to think about it for a second before I know for sure. I don't need to think about x.is_even(). And the readability is what I want natively, i.e. in the std lib.

It being in the std lib would also sidestep your concerns about security or the function call having unknown side effects.

[–] Aatube@kbin.social 3 points 7 months ago

Isn’t %2 already native?

(BTW this thing failed JavaScript so hard ECMA immediately included it in that year’s standard)